660923166960 has 960 divisors, whose sum is σ = 2798312325120. Its totient is φ = 136392284160.

The previous prime is 660923166931. The next prime is 660923166961. The reversal of 660923166960 is 69661329066.

It is a happy number.

660923166960 is a `hidden beast` number, since 6 + 609 + 23 + 1 + 6 + 6 + 9 + 6 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 660923166897 and 660923166906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660923166961) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 198891859 + ... + 198895181.

It is an arithmetic number, because the mean of its divisors is an integer number (2914908672).

Almost surely, 2^660923166960 is an apocalyptic number.

660923166960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 660923166960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1399156162560).

660923166960 is an abundant number, since it is smaller than the sum of its proper divisors (2137389158160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

660923166960 is a wasteful number, since it uses less digits than its factorization.

660923166960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3466 (or 3457 counting only the distinct ones).

The product of its (nonzero) digits is 3779136, while the sum is 54.

The spelling of 660923166960 in words is "six hundred sixty billion, nine hundred twenty-three million, one hundred sixty-six thousand, nine hundred sixty".